I got a few emails about this while on vacation, and APOD just posted it too, but what the heck: a gorgeous timelapse video of aurorae (northern lights) over Norway:
This one was done by Terje Sorgjerd, and is quite lovely. Another great timelapse aurora video can be found at Lights in the Dark, too. I still have never seen a good display myself in person (just a smear of red light to the north once when I lived in Maryland), but one day I will. One day.